Sounds interesting to me. I like the buffing side of SCH in LA, and turning an enfeeble around to create one is a lot more novel than a handful of new buffs. Also brings a new dimension to just spamming -na spells, with some thought and trade-off involved in who gets the -na and who gets a buff. Might even get some interesting behavior of people standing in silence range just to grab an MAB from backfire, or carrying debuff items for the same reason!